@article{TMF_1992_91_1_a10,
     author = {L. Knoll and A. S. Shumovskii},
     title = {Mixed correlation functions in systems interacting with {Bose} fields},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {142--156},
     publisher = {mathdoc},
     volume = {91},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1992_91_1_a10/}
}